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Note 12 - Employee Retirement Plans (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Schedule of Changes in Projected Benefit Obligations [Table Text Block]
  

December 31,

 
  

2024

  

2023

 

Change in projected benefit obligation:

        

Benefit obligation at beginning of year

 $4,972  $5,470 

Service cost

  63   77 

Interest cost

  229   266 

Participant contributions

  82   70 

Changes in actuarial assumptions

  (1,154)  (360)

Benefits paid

  (653)  (551)

Projected benefit obligation at end of year

 $3,539  $4,972 

Amounts recognized in the consolidated balance sheets consisted of:

        

Accrued expenses and other current liabilities

 $220  $280 

Retiree health benefit obligation

  3,319   4,692 
  $3,539  $4,972 
Schedule of Net Benefit Costs [Table Text Block]
  

2024

  

2023

  

2022

 

Components of net postretirement health benefit cost:

            

Service cost

 $63  $77  $115 

Interest cost

  229   266   153 

Amortization of net gain

  (514)  (539)  (400)

Net postretirement healthcare benefit cost

 $(222) $(196) $(132)
Defined Benefit Plan, Assumptions [Table Text Block]
  

Year Ended December 31,

 
  

2024

  

2023

  

2022

 

Discount rate

  4.7%  5.0%  2.5%

Immediate healthcare cost trend rate

  *   **   *** 

Ultimate healthcare cost trend rate

  4.5   4.5   4.5 

Assumed annual reduction in trend rate

  *   **   *** 

Participation

  60   60   60